JSON Mender MCP

Local MCP server: JSON repair, regex testing, JSON-Schema validation for AI agents.

Connector by headlessherm-creator · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/headlessherm-creator-json-mender-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Local MCP server: JSON repair, regex testing, JSON-Schema validation for AI agents.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 2 read · 0 write · 0 delete · 1 not yet classified
Secrets: None asked for
Install scripts: Not scanned yet
Runs as: Node.js package

Tools by what they do 3

Read from the source code; the running server may list different tools.

Read 2 · Look things up without changing anything.

validate_against_schema
validate_regex

Not yet classified 1 · We could not tell from the name and description.

repair_json

Tools (3)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

repair_json
Repair malformed JSON (trailing commas, unescaped quotes, missing brackets) and return the parsed result.
validate_against_schema
Validate data against a real JSON-Schema (draft 2020-12) and report all errors.
validate_regex
Test a regex pattern against one or more strings deterministically and return match details.

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Oct 22, 2026 (8 days ago)
Last release: Oct 22, 2026 (8 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.headlessherm-creator/json-mender-mcp
Version: 0.2.1
Auth: No auth
Packages: npm json-mender-mcp
License: MIT
Repository: github.com/headlessherm-creator/json-mender-mcp
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Cite this page

JSON Mender MCP. Agent Mart. https://agentmart.dev/connectors/headlessherm-creator-json-mender-mcp (last updated 2026-10-24)